SIST EN 15425:2017
(Main)Adhesives - One component polyurethane (PUR) for load-bearing timber structures - Classification and performance requirements
Adhesives - One component polyurethane (PUR) for load-bearing timber structures - Classification and performance requirements
This European Standard establishes a classification for one component polyurethane (PUR) adhesives according to their suitability for use in load-bearing timber structures in defined climatic exposure conditions; it specifies performance requirements for such adhesives for the factory manufacture or factory like manufacturing of load-bearing timber structures only.
It also classifies “adhesive lines” where all the products within the line have almost identical physical/chemical properties and gluing performance, but different reactivity.
This European Standard only specifies the performance of adhesives for use in an environment corresponding to the defined conditions.
The performance requirements of this European Standard apply to the adhesives only, not to the timber structure. This European Standard does not cover the performance of adhesives for on-site gluing (except for factory-like conditions) nor the production of wood-based panels, except solid wood panels, or modified and stabilized wood with considerably reduced swelling and shrinkage properties, e.g. such as acetylated wood, heat treated wood and polymer impregnated wood.
This European Standard is primarily intended for the use of adhesive manufacturers and for the use in timber structures bonded with adhesives, to assess or control the quality of adhesives. The requirements apply to the type testing of the adhesives. Production control activities are outside the scope of this European Standard.
Adhesives meeting the requirements of this European Standard are adequate for use in load-bearing timber structure, provided that the bonding process has been carried out according to an appropriate product standard.
Klebstoffe - Einkomponenten-Klebstoffe auf Polyurethanbasis (PUR) für tragende Holzbauteile - Klassifizierung und Leistungsanforderungen
Diese Europäische Norm legt eine Klassifizierung für Einkomponenten-Klebstoffe auf Polyurethanbasis (PUR) entsprechend ihrer Eignung für die Verwendung in tragenden Holzbauteilen zum Einsatz unter bestimmten klimatischen Bedingungen fest sowie die Leistungsanforderungen für derartige Klebstoffe ausschließlich zur industriellen oder werksmäßigen Herstellung von tragenden Holzbauteilen.
Sie klassifiziert auch „Klebstofflinien“, wobei alle Produkte innerhalb der Linie fast identische physikalische/chemische Eigenschaften und Verklebungseigenschaften, aber unterschiedliche Reaktivität aufweisen.
Diese Europäische Norm legt nur die Leistungseigenschaften für Klebstoffe bei Verwendung in einem Klimabereich fest, der mit den vorgegebenen Bedingungen übereinstimmt.
Die Leistungsanforderungen dieser Europäischen Norm gelten nur für die Klebstoffe, nicht für das Holzbauteil. Diese Europäische Norm gilt weder für die Leistungseigenschaften von Klebstoffen für das Verkleben vor Ort (ausgenommen bei werksmäßigen Bedingungen) noch für die Herstellung von Holzwerkstoffen, mit Ausnahme von Massivholzplatten, noch für modifiziertes und vergütetes Holz mit stark verringerten Quellungs- und Schwindungseigenschaften, wie beispielsweise acetyliertes Holz, wärmebehandeltes Holz und polymerimprägniertes Holz.
Diese Europäische Norm ist vorrangig für die Hersteller von Klebstoffen und für die Anwendung bei verklebten Holzbauteilen vorgesehen, um die Qualität der Klebstoffe zu bewerten bzw. zu überprüfen. Die Anforderungen gelten für die Typprüfung der Klebstoffe. Tätigkeiten der Produktionskontrolle fallen nicht in den Anwendungsbereich dieser Europäischen Norm.
Klebstoffe, die den Anforderungen dieser Europäischen Norm entsprechen, sind für die Verwendung in einem tragenden Holzbauteil geeignet, sofern der Verklebungsvorgang nach einer entsprechenden Produktnorm ausgeführt wurde.
Adhésifs - Adhésifs polyuréthane monocomposants (PUR) pour structures portantes en bois - Classification et exigences de performance
La présente Norme européenne établit une classification des adhésifs polyuréthane monocomposants (PUR) en fonction de leur aptitude à l’utilisation dans des structures portantes en bois dans des conditions climatiques définies, et spécifie les exigences de performance de ce type d’adhésifs pour la fabrication en usine ou la fabrication de type industriel de structures portantes en bois uniquement.
Elle classifie également les « gammes d’adhésifs » dans lesquelles tous les produits de la gamme ont des propriétés physiques/chimiques et une performance de collage quasi-identiques, mais une réactivité différente.
La présente norme ne spécifie la performance des adhésifs que dans l’environnement correspondant aux conditions définies.
Les exigences relatives à la performance définies dans la présente norme ne s’appliquent qu’aux adhésifs et non à la structure en bois. La présente norme ne couvre pas la performance des adhésifs pour le collage sur site (excepté dans des conditions de type industriel), ni la production de panneaux dérivés du bois, à l’exception des panneaux en bois massif ou des panneaux en bois modifié et stabilisé, qui présentent des propriétés de gonflement et de retrait considérablement réduites, par exemple bois acétylé, bois traité thermiquement et bois imprégné de polymère.
La présente norme est principalement destinée à être utilisée par les fabricants d’adhésifs et pour les structures en bois collées par des adhésifs, pour évaluer ou contrôler la qualité des adhésifs. Les exigences s’appliquent aux essais de type des adhésifs. Les activités de contrôle de la production sont hors du domaine d’application de la présente norme.
Les adhésifs répondant aux exigences de la présente norme conviennent pour une utilisation dans une structure portante en bois, à condition que le processus de collage ait été réalisé conformément à une norme de produit appropriée.
Lepila - Enokomponentni poliuretan (PUR) za nosilne lesene konstrukcije - Razvrstitev in zahtevane lastnosti
Ta evropski standard določa razvrstitev za lepila iz enokomponentnega poliuretana (PUR) v skladu z njihovo primernostjo za uporabo pri nosilnih lesenih konstrukcijah pri določenih pogojih izpostavljenosti podnebnim razmeram; določa zahtevane lastnosti za taka lepila za tovarniško proizvodnjo ali tovarni podobno proizvodnjo izključno nosilnih lesenih konstrukcij.
Razvršča tudi »lepilne linije«, pri čemer imajo vsi izdelki znotraj linije skoraj enake fizikalne/kemijske lastnosti in zmogljivost lepljenja, vendar različno reaktivnost.
Ta evropski standard določa lastnosti lepil izključno za uporabo v okolju, ki ustreza podanim pogojem.
Zahtevane lastnosti iz tega evropskega standarda se uporabljajo samo za lepila in ne za lesene konstrukcije. Ta evropski standard ne zajema lastnosti lepil za lepljenje na mestu uporabe (razen pogojev, podobnih tovarniškim) niti proizvodnje lesnih plošč, razen polnih lesnih plošč, ali obdelanega in stabiliziranega lesa, ki bistveno manj nabreka in se krči, kot so acetiliran les, toplotno obdelan les in polimerno impregniran les.
Ta evropski standard je namenjen predvsem za proizvajalce lepil in za uporabo pri lesenih konstrukcijah, vezanih z lepili, za ocenjevanje ali nadzor kakovosti lepil. Zahteve se uporabljajo za tipsko preskušanje lepil. Dejavnosti kontrole proizvodnje ne spadajo na področje uporabe tega evropskega standarda.
Lepila, ki izpolnjujejo zahteve tega evropskega standarda, so primerna za uporabo pri nosilnih lesenih konstrukcijah pod pogojem, da je bil postopek vezave izveden v skladu z ustreznim standardom za proizvod.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lepila - Enokomponentni poliuretan (PUR) za nosilne lesene konstrukcije - Razvrstitev in zahtevane lastnostiKlebstoffe - Einkomponenten-Klebstoffe auf Polyurethanbasis (PUR) für tragende Holzbauteile - Klassifizierung und LeistungsanforderungenAdhésifs - Adhésifs polyuréthane monocomposants (PUR) pour structures portantes en bois - Classification et exigences de performanceAdhesives - One component polyurethane (PUR) for load-bearing timber structures - Classification and performance requirements91.080.20Lesene konstrukcijeTimber structures83.180LepilaAdhesivesICS:Ta slovenski standard je istoveten z:EN 15425:2017SIST EN 15425:2017en,fr,de01-marec-2017SIST EN 15425:2017SLOVENSKI
STANDARDSIST EN 15425:20091DGRPHãþD
SIST EN 15425:2017
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15425
January
t r s y ICS
z uä s z r Supersedes EN
s w v t wã t r r zEnglish Version
bearing timber structures æ Classification and performance requirements Adhésifs æ Adhésifs polyuréthane monocomposants et exigences de performance
Klebstoffe æ EinkomponentenæKlebstoffe auf Klassifizierung und Leistungsanforderungen This European Standard was approved by CEN on
s v November
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
9
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s w v t wã t r s y ESIST EN 15425:2017
EN 15425:2017 (E) 2 Contents Page European foreword . 3 Introduction . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 7 4 Classification . 8 5 Requirements . 11 5.1 General . 11 5.2 Bond strength in longitudinal tensile shear test . 11 5.3 Resistance to delamination . 12 5.4 Tensile strength perpendicular to the glue line after climatic treatment (acid damage test) . 13 5.5 Effect of wood shrinkage on the shear strength. 13 5.6 Static load test of multiple glue line specimens in compression shear . 13 5.7 Creep deformation test at cyclic climate conditions with specimens loaded in bending shear . 13 5.8 Long-term sustained load test at cyclic climate conditions with specimens loaded perpendicular to the glue line (“Glass house test”) . 14 6 Test methods . 14 6.1 General . 14 6.2 Determination of longitudinal tensile shear strength . 14 6.3 Determination of resistance to delamination . 14 6.4 Determination of tensile strength perpendicular to the glue line after climatic treatment (acid damaged test) . 14 6.5 Determination of the effect of wood shrinkage on the shear strength . 14 6.6 Static load test of multiple glue line specimens in compression shear . 14 6.7 Creep deformation test with specimens loaded in bending shear . 15 6.8 Long-term sustained load test at cyclic climate conditions with specimens loaded perpendicular to the glue line (“Glass house test”) . 15 7 Working properties of the adhesive . 15 7.1 General . 15 7.2 Determination of initial viscosity under reference conditions . 15 7.3 Determination of open assembly time under reference conditions. 15 7.4 Determination of pressing time under reference conditions . 15 8 Marking and labelling . 15 Annex A (normative)
Climatic treatment prior to shear test . 16 Bibliography . 17
SIST EN 15425:2017
EN 15425:2017 (E) 3 European foreword This document (EN 15425:2017) has been prepared by Technical Committee CEN/TC 193 “Adhesives”, the secretariat of which is held by AENOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2017, and conflicting national standards shall be withdrawn at the latest by July 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 15425:2008. Compared to EN 15425:2008, the following main changes have been made: a) terms and definitions have been written in details in Clause 3, not only referring to EN 923:2015; b) a new classification system has been introduced. 90 °C test temperature and 1 mm glue line thickness are included in the test program in Clause 4. Adhesives tested for working properties according to Clause 7 will be marked with a “w” in the end of their designation code; c) general requirements for the different tests have been listed in 5.1; d) test treatment A8 (tensile/shear test at 90 °) has been introduced in 5.2, 6.2 and Annex A; e) a new test method is given in 5.8: Long-term sustained load test at cyclic climate conditions with specimens loaded perpendicular to the glue line (Glass house test – EN 15416-1:2017); f) the test method EN ISO 2555 has been included in 7.2; g) the necessary duration times for the test given in 5.7 have been reduced for glue line thickness 0,3 mm (General purpose adhesives). Identical duration times have been introduced for the new class “Special purpose adhesives” with 0,5 mm glue line thickness in test; h) EN 15416-2:2007, Adhesives for load bearing timber structures other than phenolic and aminoplastic — Test methods — Part 2: Static load test of multiple bond line specimens in compression shear has been introduced to the EN 302 series as EN 302-8:2017; i) in 5.6 - Static load test of multiple glue line specimens in compression shear - a definition is given for a failure mode which leads to a not counted sample; j) a new Clause 8 – Marking and labelling – has been introduced; k) a test program for adhesives with identical chemical composition except for a different amount of catalyst, has been introduced in Clause 4; l) in 5.6, a more precise description of failure modes and their influence is given. This document is one of a series dealing with one component polyurethane adhesives for use with timber structures, and is published in support of EN 1995-1-1, Eurocode 5: Design of timber structures - Part 1-1: General - Common rules and rules for buildings. SIST EN 15425:2017
EN 15425:2017 (E) 4 The series consists of: — one standard for classification and performance requirements (EN 15425:2017), — seven test methods (EN 302-1, EN 302-2, EN 302-3, EN 302-4, EN 302-8:2017, EN 15416-1:2017 (“Glass house test”) and EN 15416-3:2017) used to assess the performance of adhesives after specified heat and humidity treatments, and — three test methods (EN ISO 2555 (reference in EN 302-7), EN 15416-4:2017, and EN 15416-5:2017) to characterize the working properties of the adhesives. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 15425:2017
EN 15425:2017 (E) 5 Introduction Safety statement Persons using this European Standard should be familiar with the normal laboratory practice, if applicable. This European Standard cannot address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory conditions. Environmental statement It is understood that some of the material permitted in this European Standard may have negative environmental impact. As technological advantages lead to better alternatives for these materials, they will be eliminated from this European Standard to the extent possible. At the end of the test, it is recommended that the user of this European Standard take care to carry out an appropriate disposal of the wastes, according to local regulation. SIST EN 15425:2017
EN 15425:2017 (E) 6 1 Scope This European Standard establishes a classification for one component polyurethane (PUR) adhesives according to their suitability for use in load-bearing timber structures in defined climatic exposure conditions; it specifies performance requirements for such adhesives for the factory manufacture or factory like manufacturing of load-bearing timber structures only. It also classifies “adhesive lines” where all the products within the line have almost identical physical/chemical properties and gluing performance, but different reactivity. This European Standard only specifies the performance of adhesives for use in an environment corresponding to the defined conditions. The performance requirements of this European Standard apply to the adhesives only, not to the timber structure. This European Standard does not cover the performance of adhesives for on-site gluing (except for factory-like conditions) nor the production of wood-based panels, except solid wood panels, or modified and stabilized wood with considerably reduced swelling and shrinkage properties, e.g. such as acetylated wood, heat treated wood and polymer impregnated wood. This European Standard is primarily intended for the use of adhesive manufacturers and for the use in timber structures bonded with adhesives, to assess or control the quality of adhesives. The requirements apply to the type testing of the adhesives. Production control activities are outside the scope of this European Standard. Adhesives meeting the requirements of this European Standard are adequate for use in load-bearing timber structure, provided that the bonding process has been carried out according to an appropriate product standard. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 302-1, Adhesives for load-bearing timber structures - Test methods - Part 1: Determination of longitudinal tensile shear strength EN 302-2, Adhesives for load-bearing timber structures - Test methods - Part 2: Determination of resistance to delamination EN 302-3, Adhesives for load-bearing timber structures - Test methods - Part 3: Determination of the effect of acid damage to wood fibres by temperature and humidity cycling on the transverse tensile strength EN 302-4, Adhesives for load-bearing timber structures - Test methods - Part 4: Determination of the effects of wood shrinkage on the shear strength EN 302-7, Adhesives for load-bearing timber structures - Test methods - Part 7: Determination of the working life under referenced conditions EN 302-8:2017, Adhesives for load-bearing timber structures — Test methods — Part 8: Static load test of multiple bond line specimens in compression shear EN 923:2015, Adhesives - Terms and definitions SIST EN 15425:2017
EN 15425:2017 (E) 7 EN 15416-1:2017, Adhesives for load bearing timber structures other than phenolic and aminoplastic — Test methods — Part 1: Long-term tension load test perpendicular to the bond line at varying climate conditions with specimens perpendicular to the glue line (Glass house test) EN 15416-3:2017, Adhesives for load bearing timber structures other than phenolic and aminoplastic — Test methods — Part 3: Creep deformation test at cyclic climate conditions with specimens loaded in bending shear EN 15416-4:2017, Adhesives for load bearing timber structures other than phenolic and aminoplastic — Test methods — Part 4: Determination of open assembly time under referenced conditions EN 15416-5:2017, Adhesives for load bearing timber structures other than phenolic and aminoplastic — Test methods — Part 5: Determination of minimum pressing time under referenced conditions EN ISO 2555:1999, Plastics - Resins in the liquid state or as emulsions or dispersions - Determination of apparent viscosity by the Brookfield Test method (ISO 2555:1989) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 923:2015 and the following apply. 3.1 one component polyurethane (PUR) adhesive isocyanate containing urethane polymers, which are cross-linked by reaction with water 3.2 service class 1 climatic conditions characterized by a moisture content in the materials corresponding to a temperature of 20 °C and the relative humidity of the surrounding air only exceeding 65 % for a few weeks per year Note 1 to entry: In service class 1, which comprises typical indoor conditions, the average moisture content in most soft woods will not exceed 12 %. [SOURCE: EN 1995-1-1:2004, 2.3.1.3, modified – Indoor conditions added in Note 1 to entry] 3.3 service class 2 climatic conditions characterized by a moisture content in the materials corresponding to a temperature of 20 °C and the relative humidity of the surrounding air only exceeding 85 % for a few weeks per year Note 1 to entry: In service class 2, to which most covered exterior conditions belong, the average moisture content in most soft woods will not exceed 20 %. [SOURCE: EN 1995-1-1:2004, 2.3.1.3, modified – Covered exterior conditions added in Note 1 to entry] SIST EN 15425:2017
EN 15425:2017 (E) 8 3.4 service class 3 climatic conditions leading to higher moisture contents than in service class 2 Note 1 to entry: Exterior conditions typically belong to service class 3. [SOURCE: EN 1995-1-1:2004, 2.3.1.3, modified – Note 1 to entry has been added] 3.5 glue line adhesive layer between the wood members 3.6 bond line glue line including the two intermediate zones between adhesive and wood 3.7 close contact glue li
...
SLOVENSKI STANDARD
oSIST prEN 15425:2015
01-julij-2015
Lepila - Enokomponentni poliuretan (PUR) za nosilne lesene konstrukcije -
Razvrstitev in zahtevane lastnosti
Adhesives - One component polyurethane (PUR) for load-bearing timber structures -
Classification and performance requirements
Klebstoffe - Einkomponenten-Klebstoffe auf Polyurethanbasis (PUR) für tragende
Holzbauteile - Klassifizierung und Leistungsanforderungen
Adhésifs - Adhésifs polyuréthane monocomposants (PUR) pour structures portantes en
bois - Classification et exigences de performance
Ta slovenski standard je istoveten z: prEN 15425
ICS:
83.180 Lepila Adhesives
91.080.20 Lesene konstrukcije Timber structures
oSIST prEN 15425:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN 15425:2015
---------------------- Page: 2 ----------------------
oSIST prEN 15425:2015
EUROPEAN STANDARD
DRAFT
prEN 15425
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2015
ICS 83.180 Will supersede EN 15425:2008
English Version
Adhesives - One component polyurethane (PUR) for load-
bearing timber structures - Classification and performance
requirements
Adhésifs - Adhésifs polyuréthane monocomposants (PUR) Klebstoffe - Einkomponenten polyurethane (PUR) für
pour structures portantes en bois - Classification et tragende Holzbauteile - Klassifizierung und
exigences de performance Leistungsanforderungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 193.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15425:2015 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 15425:2015
prEN 15425:2015 (E)
Contents Page
Foreword .3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
4 Classification .7
5 Requirements .9
5.1 General .9
5.2 Bond strength in longitudinal tensile shear test .9
5.3 Resistance to delamination . 10
5.4 Tensile strength perpendicular to the glue line after climatic treatment (acid damage test) . 10
5.5 Effect of wood shrinkage on the shear strength . 11
5.6 Static load test of multiple glue line specimens in compression shear . 11
5.7 Creep deformation test at cyclic climate conditions with specimens loaded in bending
shear . 11
5.8 Long-term sustained load test at cyclic climate conditions with specimens loaded
perpendicular to the glue line (“Glass house test”). 11
6 Test methods . 12
6.1 General . 12
6.2 Determination of longitudinal tensile shear strength . 12
6.3 Determination of resistance to delamination . 12
6.4 Determination of tensile strength perpendicular to the glue line after climatic treatment
(acid damaged test) . 12
6.5 Determination of the effect of wood shrinkage on the shear strength . 12
6.6 Static load test of multiple glue line specimens in compression shear . 12
6.7 Creep deformation test with specimens loaded in bending shear . 13
6.8 Long-term sustained load test at cyclic climate conditions with specimens loaded
perpendicular to the glue line (“Glass house test”). 13
7 Working properties of the adhesive. 13
7.1 General . 13
7.2 Determination of initial viscosity under reference conditions . 13
7.3 Determination of open assembly time under reference conditions . 13
7.4 Determination of pressing time under reference conditions . 13
Annex A (normative) Climatic treatment prior to shear test . 14
Bibliography . 15
2
---------------------- Page: 4 ----------------------
oSIST prEN 15425:2015
prEN 15425:2015 (E)
Foreword
This document (prEN 15425:2015) has been prepared by Technical Committee CEN/TC 193 “Adhesives”, the
secretariat of which is held by AENOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15425:2008.
Compared to EN 15425:2008, the following changes have been made:
a) terms and definitions have been written in details in Clause 3, not only referring to
EN 923:2005+A1:2008;
b) a new classification system has been introduced. 90 °C test temperature and 1 mm glue line thickness
are included in the test program in Clause 4;
c) general requirements for the different tests have been listed in 5.1;
d) test treatment A8 (tensile/shear test at 90 °) has been introduced in 5.2, 6.2 and Annex A;
e) a new test method is given in 5.8: Long-term sustained load test at cyclic climate conditions with
specimens loaded perpendicular to the glue line (Glasshouse test – prEN 15416-1:2015);
f) the test method EN ISO 2555 has been included in 7.1;
g) the necessary duration times for the test given in 5.7 have been reduced for glue line thickness 0,3 mm
(General purpose adhesives). Identical duration times have been introduced for the new class “Special
purpose adhesives” with 0,5 mm glue line thickness in test;
h) EN 15416-2:2007, Adhesives for load bearing timber structures other than phenolic and aminoplastic -
Test methods – Part 2: Static load test of multiple bondline specimens in compression shear has been
introduced to the EN 302 series as prEN 302-8:2015.
This document is one of a series dealing with one component polyurethane adhesives for use with timber
structures, and is published in support of EN 1995-1-1, Eurocode 5: Design of timber structures - Part 1-1:
General - Common rules and rules for buildings.
The series consists of
— one standard for classification and performance requirements (prEN 15425:2015),
— seven test methods (EN 302-1, EN 302-2, EN 302-3, EN 302-4, prEN 302-8:2015, prEN 15416-1:2015
(“Glass house test”) and prEN 15416-3:2015) used to assess the performance of adhesives after
specified heat and humidity treatments, and
— three test methods (EN ISO 2555 (reference in EN 302-7), prEN 15416-4:2015, and prEN 15416-5:2015)
to characterize the working properties of the adhesives.
3
---------------------- Page: 5 ----------------------
oSIST prEN 15425:2015
prEN 15425:2015 (E)
Introduction
Safety statement
Persons using this European Standard should be familiar with the normal laboratory practice, if applicable.
This European Standard cannot address all of the safety problems, if any, associated with its use. It is the
responsibility of the user to establish appropriate safety and health practices and to ensure compliance with
any regulatory conditions.
Environmental statement
It is understood that some of the material permitted in this European Standard may have negative
environmental impact. As technological advantages lead to better alternatives for these materials, they will be
eliminated from this European Standard to the extent possible.
At the end of the test, it is recommended that the user of this European Standard take care to carry out an
appropriate disposal of the wastes, according to local regulation.
4
---------------------- Page: 6 ----------------------
oSIST prEN 15425:2015
prEN 15425:2015 (E)
1 Scope
This European Standard establishes a classification for one component polyurethane (PUR) adhesives
according to their suitability for use in load-bearing timber structures in defined climatic exposure conditions; it
specifies performance requirements for such adhesives for the factory manufacture or factory like
manufacturing of load-bearing timber structures only.
It also classifies “adhesive lines” where all the products within the line have almost identical physical/chemical
properties and gluing performance, but different reactivity.
This European Standard only specifies the performance of adhesives for use in an environment corresponding
to the defined conditions.
The performance requirements of this European Standard apply to the adhesives only, not to the timber
structure. This European Standard does not cover the performance of adhesives for on-site gluing (except for
factory-like conditions) nor the production of wood-based panels, except solid wood panels, or modified and
stabilized wood with considerably reduced swelling and shrinkage properties, e.g. such as acetylated wood,
heat treated wood and polymer impregnated wood.
This European Standard is primarily intended for the use of adhesive manufacturers and for the use in timber
structures bonded with adhesives, to assess or control the quality of adhesives. The requirements apply to the
type testing of the adhesives. Production control activities are outside the scope of this European Standard.
Adhesives meeting the requirements of this European Standard are adequate for use in load-bearing timber
structure, provided that the bonding process has been carried out according to an appropriate product
standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 302-1, Adhesives for load-bearing timber structures - Test methods - Part 1: Determination of longitudinal
tensile shear strength
EN 302-2, Adhesives for load-bearing timber structures - Test methods - Part 2: Determination of resistance to
delamination
EN 302-3, Adhesives for load-bearing timber structures - Test methods - Part 3: Determination of the effect of
acid damage to wood fibres by temperature and humidity cycling on the transverse tensile strength
EN 302-4, Adhesives for load-bearing timber structures - Test methods - Part 4: Determination of the effects
of wood shrinkage on the shear strength
EN 302-7, Adhesives for load-bearing timber structures - Test methods - Part 7: Determination of the working
life under referenced conditions
prEN 302-8:2015, Adhesives for load-bearing timber structures - Test methods - Part 8: Static load test of
multiple bond line specimens in compression shear
EN 923:2005+A1:2008, Adhesives - Terms and definitions
EN 14080:2013, Timber structures - Glued laminated timber and glued solid timber - Requirements
5
---------------------- Page: 7 ----------------------
oSIST prEN 15425:2015
prEN 15425:2015 (E)
prEN 15416-1:2015, Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test
methods - Part 1: Long-term tension load test perpendicular to the bond line at varying climate conditions with
specimens perpendicular to the glue line (Glasshouse test)
prEN 15416-3:2015, Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test
methods - Part 3: Creep deformation test at cyclic climate conditions with specimens loaded in bending shear
prEN 15416-4:2015, Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test
methods - Part 4: Determination of open assembly time under referenced conditions
prEN 15416-5:2015, Adhesives for load bearing timber structures other than phenolic and aminoplastic - Test
methods - Part 5: Determination of minimum pressing time under referenced conditions
EN ISO 2555:1999, Plastics - Resins in the liquid state or as emulsions or dispersions - Determination of
apparent viscosity by the Brookfield Test method (ISO 2555:1989)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 923:2005+A1:2008 and the following
apply.
3.1
one component polyurethane (PUR) adhesives
urethane polymers, which are cross-linked by reaction with water
3.2
service class 1
climatic conditions characterized by a moisture content in the materials corresponding to a temperature of
20 °C and the relative humidity of the surrounding air only exceeding 65 % for a few weeks per year
Note 1 to entry: In service class 1, which comprises typical indoor conditions, the average moisture content in most
soft-woods will not exceed 12 %.
[SOURCE: EN 1995-1-1:2004, 2.3.1.3]
3.3
service class 2
climatic conditions characterized by a moisture content in the materials corresponding to a temperature of
20 °C and the relative humidity of the surrounding air only exceeding 85 % for a few weeks per year
Note 1 to entry: In service class 2, to which most covered exterior conditions belong, the average moisture content in
most soft woods will not exceed 20 %.
[SOURCE: EN 1995-1-1:2004, 2.3.1.3]
3.4
service class 3
climatic conditions leading to higher moisture contents than in service class 2
Note 1 to entry: Exterior conditions typically belong to service class 3.
[SOURCE: EN 1995-1-1:2004, 2.3.1.3]
3.5
glue line
adhesive layer between the wood members
6
---------------------- Page: 8 ----------------------
oSIST prEN 15425:2015
prEN 15425:2015 (E)
3.6
close contact glue line
cc
glue line of thickness maximum 0,1 mm
Note 1 to entry: Close contact glue line is achieved by pressing together two plane wood members with a clamping
2
pressure of (0,8 ± 0,1) N/mm without groves, spacers or similar device.
3.7
thick glue line
glue line of nominal thickness in the range of 0,3 mm to 1,0 mm
Note 1 to entry: Thick glue lines are achieved by using spacers, grooves or similar device with a thickness of 0,3 mm
to 1,0 mm when two plain members are glued together.
3.8
adhesive line
series of products, all with almost identical physical/chemical properties and gluing performance, but with
different reactivity
4 Classification
Adhesives for structural purpose s
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.